Article

The aim was to culturally translate and validate the Persian lower
extremity functional scale (LEFS) in a heterogeneous sample of outpatients with
lower extremity musculoskeletal disorders (n = 304). This is a
prospective methodological study. After a standard forward-backward translation,
psychometric properties were assessed in terms of test-retest reliability,
internal consistency, construct validity, dimensionality, and ceiling or floor
effects. RESULTS: The acceptable level of intraclass correlation coefficient
>0.70 and Cronbach's alpha coefficient >0.70 was obtained for the Persian LEFS.
Correlations between Persian LEFS and Short-Form 36 Health Survey (SF-36)
subscales of Physical Health component (rs range = 0.38-0.78) were higher than
correlations between Persian LEFS and SF-36 subscales of Mental Health component
(rs range = 0.15-0.39). A corrected item--total correlation of >0.40 (Spearman's
rho) was obtained for all items of the Persian LEFS. Horn's parallel analysis
detected a total of two factors. No ceiling or floor effects were detected for
the Persian LEFS. CONCLUSIONS: The Persian version of the LEFS is a reliable and
valid instrument that can be used to measure functional status in
Persian-speaking patients with different musculoskeletal disorders of the lower
extremity. Implications for Rehabilitation The Persian lower extremity functional
scale (LEFS) is a reliable, internally consistent and valid instrument, with no
ceiling or floor effects, to determine functional status of heterogeneous
patients with musculoskeletal disorders of the lower extremity. The Persian
version of the LEFS can be used in clinical and research settings to measure
function in Iranian patients with different musculoskeletal disorders of the
lower extremity.

Langue : ANGLAIS